Plastic composition.



106. UUMPUSIIIUNS, mom a COATING QR PLASTIC. V

UNITED STATES PATENT OFFICE.

1 5 x. WILLIAM MCARTHUR, OF TENINO, WASHINGTON. PLASTIC COMPOSITION.

1,274,726, Specification of Letters Patent. Patented A g, 6, 1918,

No Drawing. Application filed May 8, 1917, Serial No. 167,316. Renewed March 12, 1918. Serial No. 222,045.

To all whom it may concern:

Be it known that I, WILLIAM MoARTHUR, a citizen of the United States, residing at Tenino, in the county of Thurston and State 5 of Washington, have invented a new and useful Plastic Composition, of which the following is a specification.

This invention relates to a plastic composition for use in manufacture of brick, tile,

sewer pipe, pottery and other articles ordinarily made of clay.

One of the objects of the present invention is to prepare a plastic composition which is light, fireproof, waterproof, and of considerable strength, it being possible to use the composition not only for the purposes mentioned but also as a plaster, as a floor covering, and for like purposes.

With the foregoing and other objects in view the invention consists of the following ingredients substantially in the proportions stated, said proportions being b volume Tufi'50 parts, Sodium silicate12 parts,

Sodium chlorid1 or 2 parts,

To fifteen (15) parts of the above mixture may be added one part of Portland cement and one part lime althoug t ese a c 1- mm. ingredients are not necessary under all conditions.

In making the composition the which lcanic ash is procured by astlng or is in any desired manner, and is thoroughly aside to dr WVhenit 1s desired to make bricks from the composition the composition is first molded into bricks after which the bricks are placed in a furnace or kiln and heated to a hi tem erature for one or t-woh hen 1t 1s desired to use the composition as a floor covering it is reduced to a fine powder after the parts have been thoroughly mixed and this powder can be shipped in barrels or sacks. The composition is mixed with water and then spread over the floor in the same manner as plaster.

Where it is desired to give the composition considerable strength, cement and lime can \Vhat is claimed is:

A plastic composition including pulven ized tuff, sodium silicate, sodium chlorid and Pdrt'land cement; i

'2. A mastic-composition consisting of pulverized tuft, approximately 50 parts, sodium silicate approximately 12 parts, and sodium chlorid approximately 2 parts, combined with Portland cement and lime.

In testimony that I claim the foregoing as Qadded thereto in the proportions stated.

roasted in suitable apparatus provided 3 ere or, after which it is put through a my own, I have hereto affixed my signature crushing process so as to geduce owder. Fifty (50) parts 0 are mlxed with the twelve (12) parts of sodium silicate so as to roduce a thick paste 40 or dough, and after t ese two ingredients it a e f this powc er in the presence of two witnesses.

\VILLIAH MCARTHUR. WVitnesses H. P. Son-BEL, P. C. KIBBE.

Copies of thil patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

